The only one I've seen upclose was done by Robar. It was on a G21 and while I thought it looked a little strange they did a good job and it did feel better. I have very large hands and the G21 size still feels like I'm trying to grip a 2x4. I shot a friends G30 and liked it very much, it also recoiled alot less than the G21, I have been told it is due to the dual recoil spring set up. I plan on getting one someday. Like I said Robar does a great job, but a little pricey.